'''Cosmic rays''' are particles that bombard the Earth from [[outer space]], such as::
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'''Cosmic rays''' are particles that bombard the Earth from [[outer space]], such as:
* Galactic Cosmic Rays -- coming from outside the solar system
* Galactic Cosmic Rays -- coming from outside the solar system
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* Solar Energetic Particles -- associated with solar flares and other energetic solar events
* Solar Energetic Particles -- associated with solar flares and other energetic solar events
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NASA says that, "... cosmic rays go up when [[solar activity]] goes down." [http://www.nasa.gov/topics/solarsystem/features/ray_surge.html]
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NASA says that, "... cosmic rays go up when [[solar activity]] goes down." [http://www.nasa.gov/topics/solarsystem/features/ray_surge.html]
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The NPICC says that, "GCR intensity is modulated by the strength of the [[solar wind]] and its [[magnetic field]]." [http://www.sepp.org/publications/NIPCC_final.pdf]